Can you please delete data to improve the DB performance?
Also please advice for any jobs we can run to delete the same periodically.
I'm Sabrina from SAP Commerce Cloud Team and I was just assigned to your case now.
To delete the records from your database in HAC we recommend to perform it from your side.
For that, you can read the SAP community blog How to Reduce Database Storage on SAP Commerce Cloud.
Where in this link you can also check how to perform a regular clean up.
I believe that I could answer your question.
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Support Engineer, Commerce Cloud